After driving to Adelaide a few months ago after about a week in Adel. upon starting my gen 2 MPS it ran very rough, I then started it again after abt 5 min and it ran like nothing had happened but a CEL light was on. After driving for about an hour and had the engine off for a couple of hours when I started it again, no CEL. After driving back 3000 km to Darwin and another 2 thou it did it again. Another 4thou and it did it again today. The car still makes 187kw atw, this odd event just pops up every now and then. Any ideas?